Benefit Plans (Benefit Plan Information) (Details) - USD ($) $ in Thousands	Feb. 28, 2023	Feb. 28, 2022
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 190,007	$ 214,928
Projected benefit obligation	218,341	284,291
Funded status recognized	(28,334)	(69,363)
Current liability	(639)	(630)
Noncurrent liability	(27,695)	(68,733)
Net amount recognized	(28,334)	(69,363)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets	190,007	214,928
Projected benefit obligation	209,298	273,257
Funded status recognized	(19,291)	(58,329)
Current liability	0	0
Noncurrent liability	(19,291)	(58,329)
Net amount recognized	(19,291)	(58,329)
Restoration Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Projected benefit obligation	9,043	11,034
Funded status recognized	(9,043)	(11,034)
Current liability	(639)	(630)
Noncurrent liability	(8,404)	(10,404)
Net amount recognized	$ (9,043)	$ (11,034)